In some embodiments, an apparatus includes a memory and a processor operatively coupled to the memory. The processor is configured to be operatively coupled to a first optical transponder and a second optical transponder. The processor is configured to receive, from the second optical transponder, a signal representing a skew value of an optical signal and a signal representing a bit-error-rate (BER) value of the optical signal. The skew value is associated with a skew between an in-phase component of the optical signal and a quadrature component of the optical signal. The processor is configured to determine, based on at least one of the skew value or the BER value, if a performance degradation of the first optical transponder satisfies a threshold. The processor is configured to send a control signal to the first optical transponder to adjust a pulse shaping or a data baud rate of the first optical transponder.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method, comprising: receiving a first signal representing a skew value of an optical signal and a second signal representing a bit-error-rate (BER) value of the optical signal, the optical signal transmitted from an optical transmitter to an optical receiver, the skew value associated with a skew between an in-phase component of the optical signal and a quadrature component of the optical signal; determining, based on at least one of the skew value or the BER value, if a performance degradation of the optical transmitter satisfies a threshold; when the performance degradation of the optical transmitter satisfies the threshold: sending a first control signal to the optical transmitter to adjust, based on the performance degradation, a wavelength characteristic of the optical transmitter; sending a second control signal to a Wavelength Selective Switch (WSS) operatively coupled to the optical transmitter to adjust, based on the wavelength characteristic of the optical transmitter, a wavelength characteristic of the WSS; and sending a third control signal to the optical transmitter to adjust, based on the performance degradation, a data baud rate of the optical transmitter.
2. The method of claim 1 , further comprising: when the performance degradation of the optical transmitter satisfies the threshold, sending a fourth control signal to the optical transmitter to adjust, based on the performance degradation, a pulse shaping of the optical transmitter.
3. The method of claim 1 , further comprising: when the performance degradation of the optical transmitter satisfies the threshold, sending a fourth control signal to the optical transmitter to adjust, based on the performance degradation, a pulse shaping of the optical transmitter, the pulse shaping of the optical transmitter including a roll-off factor of a finite impulse response (FIR) filter of the optical transmitter.
4. The method of claim 1 , further comprising: when the performance degradation of the optical transmitter satisfies the threshold, sending a fourth control signal to the optical receiver to adjust, based on the wavelength characteristic of the optical transmitter, a wavelength characteristic of the optical receiver.
5. The method of claim 1 , wherein: the first control signal includes information to adjust a wavelength characteristic of a first transmitter channel from a plurality of transmitter channels associated with the optical transmitter; and the first control signal includes information to adjust a wavelength characteristic of a second transmitter channel from the plurality of transmitter channels and a wavelength characteristic of a third transmitter channel from the plurality of transmitter channels, the second transmitter channel and the third transmitter channel being adjacent transmitter channels to the first transmitter channel.
6. The method of claim 1 , wherein: the sending the third control signal to the optical transmitter to adjust the data baud rate of the optical transmitter includes sending the third control signal to adjust the data baud rate when live data traffic are transmitted from the optical transmitter to the optical receiver.
7. The method of claim 1 , further comprising: when the performance degradation of the optical transmitter satisfies the threshold, sending a fourth control signal to the optical receiver to adjust, based on the performance degradation, a bandwidth of a receiver channel from a plurality of receiver channels of the optical receiver.
8. The method of claim 1 , further comprising: when the performance degradation of the optical transmitter satisfies the threshold: sending a fourth control signal to the optical transmitter to adjust, based on the performance degradation, a modulation format of a first transmitter channel from a plurality of transmitter channels associated with the optical transmitter from a first modulation format to a second modulation format, and not adjust a modulation format of a second transmitter channel from the plurality of transmitter channels and a modulation format of a third transmitter channel from the plurality of transmitter channels from the first modulation format to the second modulation format, the first modulation format being different from the second modulation format.
9. The method of claim 1 , wherein: the optical signal includes an X polarization channel (X channel) and a Y polarization channel (Y channel), the X channel of the optical signal including an in-phase channel (XI channel) and a quadrature channel (XQ channel), the Y channel of the optical signal including an in-phase channel (YI channel) and a quadrature channel (YQ channel); and the skew between the in-phase component of the optical signal and the quadrature component of the optical signal is a skew between the XI channel of the optical signal and the XQ channel of the optical signal or a skew between the YI channel of the optical signal and the YQ channel of the optical signal.
10. A method, comprising: receiving an optical signal from a first optical transponder; determining a bit-error-rate (BER) value of the optical signal; determining a skew value of the optical signal, the skew value corresponding to a skew between an in-phase component of the optical signal and a quadrature component of the optical signal; determining if the skew value satisfies a first threshold or if the BER value satisfies a second threshold; and when the skew value satisfies the first threshold or the BER value satisfies the second threshold: sending a first control signal to adjust a wavelength characteristic of the first optical transponder, sending a second control signal to adjust, based on the wavelength characteristic of the first optical transponder, a wavelength characteristic of a Wavelength Selective Switch (WSS), and adjusting, based on the wavelength characteristic of the first optical transponder, a wavelength characteristic of a second optical transponder that received the optical signal.
11. The method of claim 10 , further comprising: when the skew value satisfies the first threshold or the BER value satisfies the second threshold, sending, based on at least one of the skew value or the BER value, a third control signal to the first optical transponder causing a roll-off factor of a finite impulse response (FIR) filter of the optical transponder to be adjusted.
12. The method of claim 10 , further comprising: when the skew value satisfies the first threshold or the BER value satisfies the second threshold, sending, based on at least one of the skew value or the BER value, a third control signal to the first optical transponder causing a data baud rate of the first optical transponder to be adjusted.
13. The method of claim 10 , wherein: the first control signal includes information to adjust a wavelength characteristic of a first transmitter channel from a plurality of transmitter channels associated with the first optical transponder; and the first control signal includes information to adjust a wavelength characteristic of a second transmitter channel from the plurality of transmitter channels and a wavelength characteristic of a third transmitter channel from the plurality of transmitter channels, the second transmitter channel and the third transmitter channel being adjacent transmitter channels to the first transmitter channel.
14. The method of claim 10 , further comprising: when the skew value satisfies the first threshold or the BER value satisfies the second threshold, sending, based on at least one of the skew value or the BER value, a third control signal to the first optical transponder causing a data baud rate of the first optical transponder to be adjusted when live data traffic are transmitted from the first optical transponder.
15. The method of claim 10 , wherein: the wavelength characteristic of the second optical transponder being a bandwidth of a receiver channel from a plurality of receiver channels of the second optical transponder.
16. The method of claim 10 , further comprising: when the skew value satisfies the first threshold or the BER value satisfies the second threshold, sending a third control signal to the first optical transponder to adjust, based on at least one of the skew value or the BER value, a modulation format of a first transmitter channel from a plurality of transmitter channels associated with the first optical transponder from a first modulation format to a second modulation format.
17. An apparatus, comprising: a memory; and a processor operatively coupled to the memory, the processor configured to be operatively coupled to a first optical transponder and a second optical transponder, the processor configured to receive, from the second optical transponder, a first signal representing a skew value of an optical signal and a second signal representing a bit-error-rate (BER) value of the optical signal, the optical signal transmitted from the first optical transponder to the second optical transponder, the skew value associated with a skew between an in-phase component of the optical signal and a quadrature component of the optical signal; the processor configured to determine, based on at least one of the skew value or the BER value, if a performance degradation associated with the first optical transponder or the second optical transponder satisfies a threshold; when the performance degradation satisfies the threshold: sending a first control signal to the first optical transponder to adjust, based on the performance degradation, a wavelength characteristic of the first optical transponder; sending a second control signal to a Wavelength Selective Switch (WSS) operatively coupled to the first optical transponder to adjust, based on the wavelength characteristic of the first optical transponder, a wavelength characteristic of the WSS; and sending a third control signal to the first optical transponder to adjust, based on the performance degradation, a data baud rate of the first optical transponder.
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December 12, 2019
February 9, 2021
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